/*! JSON v3.2.6 | http://bestiejs.github.io/json3 | Copyright 2012-2013, Kit Cambridge | http://kit.mit-license.org */
;(function (window) {
    // Convenience aliases.
    var getClass = {}.toString, isProperty, forEach, undef;

    // Detect the `define` function exposed by asynchronous module loaders. The
    // strict `define` check is necessary for compatibility with `r.js`.
    var isLoader = typeof define === "function" && define.amd;

    // Detect native implementations.
    var nativeJSON = typeof JSON == "object" && JSON;

    // Set up the JSON 3 namespace, preferring the CommonJS `exports` object if
    // available.
    var JSON3 = typeof exports == "object" && exports && !exports.nodeType && exports;

    if (JSON3 && nativeJSON) {
        // Explicitly delegate to the native `stringify` and `parse`
        // implementations in CommonJS environments.
        JSON3.stringify = nativeJSON.stringify;
        JSON3.parse = nativeJSON.parse;
    } else {
        // Export for web browsers, JavaScript engines, and asynchronous module
        // loaders, using the global `JSON` object if available.
        JSON3 = window.JSON = nativeJSON || {};
    }

    // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
    var isExtended = new Date(-3509827334573292);
    try {
        // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
        // results for certain dates in Opera >= 10.53.
        isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
            // Safari < 2.0.2 stores the internal millisecond time value correctly,
            // but clips the values returned by the date methods to the range of
            // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
            isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
    } catch (exception) {
    }

    // Internal: Determines whether the native `JSON.stringify` and `parse`
    // implementations are spec-compliant. Based on work by Ken Snyder.
    function has(name) {
        if (has[name] !== undef) {
            // Return cached feature test result.
            return has[name];
        }

        var isSupported;
        if (name == "bug-string-char-index") {
            // IE <= 7 doesn't support accessing string characters using square
            // bracket notation. IE 8 only supports this for primitives.
            isSupported = "a"[0] != "a";
        } else if (name == "json") {
            // Indicates whether both `JSON.stringify` and `JSON.parse` are
            // supported.
            isSupported = has("json-stringify") && has("json-parse");
        } else {
            var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
            // Test `JSON.stringify`.
            if (name == "json-stringify") {
                var stringify = JSON3.stringify, stringifySupported = typeof stringify == "function" && isExtended;
                if (stringifySupported) {
                    // A test function object with a custom `toJSON` method.
                    (value = function () {
                        return 1;
                    }).toJSON = value;
                    try {
                        stringifySupported =
                            // Firefox 3.1b1 and b2 serialize string, number, and boolean
                            // primitives as object literals.
                            stringify(0) === "0" &&
                            // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
                            // literals.
                            stringify(new Number()) === "0" &&
                            stringify(new String()) == '""' &&
                            // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
                            // does not define a canonical JSON representation (this applies to
                            // objects with `toJSON` properties as well, *unless* they are nested
                            // within an object or array).
                            stringify(getClass) === undef &&
                            // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
                            // FF 3.1b3 pass this test.
                            stringify(undef) === undef &&
                            // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
                            // respectively, if the value is omitted entirely.
                            stringify() === undef &&
                            // FF 3.1b1, 2 throw an error if the given value is not a number,
                            // string, array, object, Boolean, or `null` literal. This applies to
                            // objects with custom `toJSON` methods as well, unless they are nested
                            // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
                            // methods entirely.
                            stringify(value) === "1" &&
                            stringify([value]) == "[1]" &&
                            // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
                            // `"[null]"`.
                            stringify([undef]) == "[null]" &&
                            // YUI 3.0.0b1 fails to serialize `null` literals.
                            stringify(null) == "null" &&
                            // FF 3.1b1, 2 halts serialization if an array contains a function:
                            // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
                            // elides non-JSON values from objects and arrays, unless they
                            // define custom `toJSON` methods.
                            stringify([undef, getClass, null]) == "[null,null,null]" &&
                            // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
                            // where character escape codes are expected (e.g., `\b` => `\u0008`).
                            stringify({"a": [value, true, false, null, "\x00\b\n\f\r\t"]}) == serialized &&
                            // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
                            stringify(null, value) === "1" &&
                            stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
                            // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
                            // serialize extended years.
                            stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
                            // The milliseconds are optional in ES 5, but required in 5.1.
                            stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
                            // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
                            // four-digit years instead of six-digit years. Credits: @Yaffle.
                            stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
                            // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
                            // values less than 1000. Credits: @Yaffle.
                            stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
                    } catch (exception) {
                        stringifySupported = false;
                    }
                }
                isSupported = stringifySupported;
            }
            // Test `JSON.parse`.
            if (name == "json-parse") {
                var parse = JSON3.parse;
                if (typeof parse == "function") {
                    try {
                        // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
                        // Conforming implementations should also coerce the initial argument to
                        // a string prior to parsing.
                        if (parse("0") === 0 && !parse(false)) {
                            // Simple parsing test.
                            value = parse(serialized);
                            var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
                            if (parseSupported) {
                                try {
                                    // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
                                    parseSupported = !parse('"\t"');
                                } catch (exception) {
                                }
                                if (parseSupported) {
                                    try {
                                        // FF 4.0 and 4.0.1 allow leading `+` signs and leading
                                        // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
                                        // certain octal literals.
                                        parseSupported = parse("01") !== 1;
                                    } catch (exception) {
                                    }
                                }
                                if (parseSupported) {
                                    try {
                                        // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
                                        // points. These environments, along with FF 3.1b1 and 2,
                                        // also allow trailing commas in JSON objects and arrays.
                                        parseSupported = parse("1.") !== 1;
                                    } catch (exception) {
                                    }
                                }
                            }
                        }
                    } catch (exception) {
                        parseSupported = false;
                    }
                }
                isSupported = parseSupported;
            }
        }
        return has[name] = !!isSupported;
    }

    if (!has("json")) {
        // Common `[[Class]]` name aliases.
        var functionClass = "[object Function]";
        var dateClass = "[object Date]";
        var numberClass = "[object Number]";
        var stringClass = "[object String]";
        var arrayClass = "[object Array]";
        var booleanClass = "[object Boolean]";

        // Detect incomplete support for accessing string characters by index.
        var charIndexBuggy = has("bug-string-char-index");

        // Define additional utility methods if the `Date` methods are buggy.
        if (!isExtended) {
            var floor = Math.floor;
            // A mapping between the months of the year and the number of days between
            // January 1st and the first of the respective month.
            var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
            // Internal: Calculates the number of days between the Unix epoch and the
            // first day of the given month.
            var getDay = function (year, month) {
                return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
            };
        }

        // Internal: Determines if a property is a direct property of the given
        // object. Delegates to the native `Object#hasOwnProperty` method.
        if (!(isProperty = {}.hasOwnProperty)) {
            isProperty = function (property) {
                var members = {}, constructor;
                if ((members.__proto__ = null, members.__proto__ = {
                    // The *proto* property cannot be set multiple times in recent
                    // versions of Firefox and SeaMonkey.
                    "toString": 1
                }, members).toString != getClass) {
                    // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
                    // supports the mutable *proto* property.
                    isProperty = function (property) {
                        // Capture and break the object's prototype chain (see section 8.6.2
                        // of the ES 5.1 spec). The parenthesized expression prevents an
                        // unsafe transformation by the Closure Compiler.
                        var original = this.__proto__, result = property in (this.__proto__ = null, this);
                        // Restore the original prototype chain.
                        this.__proto__ = original;
                        return result;
                    };
                } else {
                    // Capture a reference to the top-level `Object` constructor.
                    constructor = members.constructor;
                    // Use the `constructor` property to simulate `Object#hasOwnProperty` in
                    // other environments.
                    isProperty = function (property) {
                        var parent = (this.constructor || constructor).prototype;
                        return property in this && !(property in parent && this[property] === parent[property]);
                    };
                }
                members = null;
                return isProperty.call(this, property);
            };
        }

        // Internal: A set of primitive types used by `isHostType`.
        var PrimitiveTypes = {
            'boolean': 1,
            'number': 1,
            'string': 1,
            'undefined': 1
        };

        // Internal: Determines if the given object `property` value is a
        // non-primitive.
        var isHostType = function (object, property) {
            var type = typeof object[property];
            return type == 'object' ? !!object[property] : !PrimitiveTypes[type];
        };

        // Internal: Normalizes the `for...in` iteration algorithm across
        // environments. Each enumerated key is yielded to a `callback` function.
        forEach = function (object, callback) {
            var size = 0, Properties, members, property;

            // Tests for bugs in the current environment's `for...in` algorithm. The
            // `valueOf` property inherits the non-enumerable flag from
            // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
            (Properties = function () {
                this.valueOf = 0;
            }).prototype.valueOf = 0;

            // Iterate over a new instance of the `Properties` class.
            members = new Properties();
            for (property in members) {
                // Ignore all properties inherited from `Object.prototype`.
                if (isProperty.call(members, property)) {
                    size++;
                }
            }
            Properties = members = null;

            // Normalize the iteration algorithm.
            if (!size) {
                // A list of non-enumerable properties inherited from `Object.prototype`.
                members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
                // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
                // properties.
                forEach = function (object, callback) {
                    var isFunction = getClass.call(object) == functionClass, property, length;
                    var hasProperty = !isFunction && typeof object.constructor != 'function' && isHostType(object, 'hasOwnProperty') ? object.hasOwnProperty : isProperty;
                    for (property in object) {
                        // Gecko <= 1.0 enumerates the `prototype` property of functions under
                        // certain conditions; IE does not.
                        if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
                            callback(property);
                        }
                    }
                    // Manually invoke the callback for each non-enumerable property.
                    for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property)) ;
                };
            } else if (size == 2) {
                // Safari <= 2.0.4 enumerates shadowed properties twice.
                forEach = function (object, callback) {
                    // Create a set of iterated properties.
                    var members = {}, isFunction = getClass.call(object) == functionClass, property;
                    for (property in object) {
                        // Store each property name to prevent double enumeration. The
                        // `prototype` property of functions is not enumerated due to cross-
                        // environment inconsistencies.
                        if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
                            callback(property);
                        }
                    }
                };
            } else {
                // No bugs detected; use the standard `for...in` algorithm.
                forEach = function (object, callback) {
                    var isFunction = getClass.call(object) == functionClass, property, isConstructor;
                    for (property in object) {
                        if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
                            callback(property);
                        }
                    }
                    // Manually invoke the callback for the `constructor` property due to
                    // cross-environment inconsistencies.
                    if (isConstructor || isProperty.call(object, (property = "constructor"))) {
                        callback(property);
                    }
                };
            }
            return forEach(object, callback);
        };

        // Public: Serializes a JavaScript `value` as a JSON string. The optional
        // `filter` argument may specify either a function that alters how object and
        // array members are serialized, or an array of strings and numbers that
        // indicates which properties should be serialized. The optional `width`
        // argument may be either a string or number that specifies the indentation
        // level of the output.
        if (!has("json-stringify")) {
            // Internal: A map of control characters and their escaped equivalents.
            var Escapes = {
                92: "\\\\",
                34: '\\"',
                8: "\\b",
                12: "\\f",
                10: "\\n",
                13: "\\r",
                9: "\\t"
            };

            // Internal: Converts `value` into a zero-padded string such that its
            // length is at least equal to `width`. The `width` must be <= 6.
            var leadingZeroes = "000000";
            var toPaddedString = function (width, value) {
                // The `|| 0` expression is necessary to work around a bug in
                // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
                return (leadingZeroes + (value || 0)).slice(-width);
            };

            // Internal: Double-quotes a string `value`, replacing all ASCII control
            // characters (characters with code unit values between 0 and 31) with
            // their escaped equivalents. This is an implementation of the
            // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
            var unicodePrefix = "\\u00";
            var quote = function (value) {
                var result = '"', index = 0, length = value.length, isLarge = length > 10 && charIndexBuggy, symbols;
                if (isLarge) {
                    symbols = value.split("");
                }
                for (; index < length; index++) {
                    var charCode = value.charCodeAt(index);
                    // If the character is a control character, append its Unicode or
                    // shorthand escape sequence; otherwise, append the character as-is.
                    switch (charCode) {
                        case 8:
                        case 9:
                        case 10:
                        case 12:
                        case 13:
                        case 34:
                        case 92:
                            result += Escapes[charCode];
                            break;
                        default:
                            if (charCode < 32) {
                                result += unicodePrefix + toPaddedString(2, charCode.toString(16));
                                break;
                            }
                            result += isLarge ? symbols[index] : charIndexBuggy ? value.charAt(index) : value[index];
                    }
                }
                return result + '"';
            };

            // Internal: Recursively serializes an object. Implements the
            // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
            var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
                var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element,
                    index, length, prefix, result;
                try {
                    // Necessary for host object support.
                    value = object[property];
                } catch (exception) {
                }
                if (typeof value == "object" && value) {
                    className = getClass.call(value);
                    if (className == dateClass && !isProperty.call(value, "toJSON")) {
                        if (value > -1 / 0 && value < 1 / 0) {
                            // Dates are serialized according to the `Date#toJSON` method
                            // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
                            // for the ISO 8601 date time string format.
                            if (getDay) {
                                // Manually compute the year, month, date, hours, minutes,
                                // seconds, and milliseconds if the `getUTC*` methods are
                                // buggy. Adapted from @Yaffle's `date-shim` project.
                                date = floor(value / 864e5);
                                for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++) ;
                                for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++) ;
                                date = 1 + date - getDay(year, month);
                                // The `time` value specifies the time within the day (see ES
                                // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
                                // to compute `A modulo B`, as the `%` operator does not
                                // correspond to the `modulo` operation for negative numbers.
                                time = (value % 864e5 + 864e5) % 864e5;
                                // The hours, minutes, seconds, and milliseconds are obtained by
                                // decomposing the time within the day. See section 15.9.1.10.
                                hours = floor(time / 36e5) % 24;
                                minutes = floor(time / 6e4) % 60;
                                seconds = floor(time / 1e3) % 60;
                                milliseconds = time % 1e3;
                            } else {
                                year = value.getUTCFullYear();
                                month = value.getUTCMonth();
                                date = value.getUTCDate();
                                hours = value.getUTCHours();
                                minutes = value.getUTCMinutes();
                                seconds = value.getUTCSeconds();
                                milliseconds = value.getUTCMilliseconds();
                            }
                            // Serialize extended years correctly.
                            value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
                                "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
                                // Months, dates, hours, minutes, and seconds should have two
                                // digits; milliseconds should have three.
                                "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
                                // Milliseconds are optional in ES 5.0, but required in 5.1.
                                "." + toPaddedString(3, milliseconds) + "Z";
                        } else {
                            value = null;
                        }
                    } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
                        // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
                        // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
                        // ignores all `toJSON` methods on these objects unless they are
                        // defined directly on an instance.
                        value = value.toJSON(property);
                    }
                }
                if (callback) {
                    // If a replacement function was provided, call it to obtain the value
                    // for serialization.
                    value = callback.call(object, property, value);
                }
                if (value === null) {
                    return "null";
                }
                className = getClass.call(value);
                if (className == booleanClass) {
                    // Booleans are represented literally.
                    return "" + value;
                } else if (className == numberClass) {
                    // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
                    // `"null"`.
                    return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
                } else if (className == stringClass) {
                    // Strings are double-quoted and escaped.
                    return quote("" + value);
                }
                // Recursively serialize objects and arrays.
                if (typeof value == "object") {
                    // Check for cyclic structures. This is a linear search; performance
                    // is inversely proportional to the number of unique nested objects.
                    for (length = stack.length; length--;) {
                        if (stack[length] === value) {
                            // Cyclic structures cannot be serialized by `JSON.stringify`.
                            throw TypeError();
                        }
                    }
                    // Add the object to the stack of traversed objects.
                    stack.push(value);
                    results = [];
                    // Save the current indentation level and indent one additional level.
                    prefix = indentation;
                    indentation += whitespace;
                    if (className == arrayClass) {
                        // Recursively serialize array elements.
                        for (index = 0, length = value.length; index < length; index++) {
                            element = serialize(index, value, callback, properties, whitespace, indentation, stack);
                            results.push(element === undef ? "null" : element);
                        }
                        result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
                    } else {
                        // Recursively serialize object members. Members are selected from
                        // either a user-specified list of property names, or the object
                        // itself.
                        forEach(properties || value, function (property) {
                            var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
                            if (element !== undef) {
                                // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
                                // is not the empty string, let `member` {quote(property) + ":"}
                                // be the concatenation of `member` and the `space` character."
                                // The "`space` character" refers to the literal space
                                // character, not the `space` {width} argument provided to
                                // `JSON.stringify`.
                                results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
                            }
                        });
                        result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
                    }
                    // Remove the object from the traversed object stack.
                    stack.pop();
                    return result;
                }
            };

            // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
            JSON3.stringify = function (source, filter, width) {
                var whitespace, callback, properties, className;
                if (typeof filter == "function" || typeof filter == "object" && filter) {
                    if ((className = getClass.call(filter)) == functionClass) {
                        callback = filter;
                    } else if (className == arrayClass) {
                        // Convert the property names array into a makeshift set.
                        properties = {};
                        for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1)) ;
                    }
                }
                if (width) {
                    if ((className = getClass.call(width)) == numberClass) {
                        // Convert the `width` to an integer and create a string containing
                        // `width` number of space characters.
                        if ((width -= width % 1) > 0) {
                            for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ") ;
                        }
                    } else if (className == stringClass) {
                        whitespace = width.length <= 10 ? width : width.slice(0, 10);
                    }
                }
                // Opera <= 7.54u2 discards the values associated with empty string keys
                // (`""`) only if they are used directly within an object member list
                // (e.g., `!("" in { "": 1})`).
                return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
            };
        }

        // Public: Parses a JSON source string.
        if (!has("json-parse")) {
            var fromCharCode = String.fromCharCode;

            // Internal: A map of escaped control characters and their unescaped
            // equivalents.
            var Unescapes = {
                92: "\\",
                34: '"',
                47: "/",
                98: "\b",
                116: "\t",
                110: "\n",
                102: "\f",
                114: "\r"
            };

            // Internal: Stores the parser state.
            var Index, Source;

            // Internal: Resets the parser state and throws a `SyntaxError`.
            var abort = function () {
                Index = Source = null;
                throw SyntaxError();
            };

            // Internal: Returns the next token, or `"$"` if the parser has reached
            // the end of the source string. A token may be a string, number, `null`
            // literal, or Boolean literal.
            var lex = function () {
                var source = Source, length = source.length, value, begin, position, isSigned, charCode;
                while (Index < length) {
                    charCode = source.charCodeAt(Index);
                    switch (charCode) {
                        case 9:
                        case 10:
                        case 13:
                        case 32:
                            // Skip whitespace tokens, including tabs, carriage returns, line
                            // feeds, and space characters.
                            Index++;
                            break;
                        case 123:
                        case 125:
                        case 91:
                        case 93:
                        case 58:
                        case 44:
                            // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
                            // the current position.
                            value = charIndexBuggy ? source.charAt(Index) : source[Index];
                            Index++;
                            return value;
                        case 34:
                            // `"` delimits a JSON string; advance to the next character and
                            // begin parsing the string. String tokens are prefixed with the
                            // sentinel `@` character to distinguish them from punctuators and
                            // end-of-string tokens.
                            for (value = "@", Index++; Index < length;) {
                                charCode = source.charCodeAt(Index);
                                if (charCode < 32) {
                                    // Unescaped ASCII control characters (those with a code unit
                                    // less than the space character) are not permitted.
                                    abort();
                                } else if (charCode == 92) {
                                    // A reverse solidus (`\`) marks the beginning of an escaped
                                    // control character (including `"`, `\`, and `/`) or Unicode
                                    // escape sequence.
                                    charCode = source.charCodeAt(++Index);
                                    switch (charCode) {
                                        case 92:
                                        case 34:
                                        case 47:
                                        case 98:
                                        case 116:
                                        case 110:
                                        case 102:
                                        case 114:
                                            // Revive escaped control characters.
                                            value += Unescapes[charCode];
                                            Index++;
                                            break;
                                        case 117:
                                            // `\u` marks the beginning of a Unicode escape sequence.
                                            // Advance to the first character and validate the
                                            // four-digit code point.
                                            begin = ++Index;
                                            for (position = Index + 4; Index < position; Index++) {
                                                charCode = source.charCodeAt(Index);
                                                // A valid sequence comprises four hexdigits (case-
                                                // insensitive) that form a single hexadecimal value.
                                                if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
                                                    // Invalid Unicode escape sequence.
                                                    abort();
                                                }
                                            }
                                            // Revive the escaped character.
                                            value += fromCharCode("0x" + source.slice(begin, Index));
                                            break;
                                        default:
                                            // Invalid escape sequence.
                                            abort();
                                    }
                                } else {
                                    if (charCode == 34) {
                                        // An unescaped double-quote character marks the end of the
                                        // string.
                                        break;
                                    }
                                    charCode = source.charCodeAt(Index);
                                    begin = Index;
                                    // Optimize for the common case where a string is valid.
                                    while (charCode >= 32 && charCode != 92 && charCode != 34) {
                                        charCode = source.charCodeAt(++Index);
                                    }
                                    // Append the string as-is.
                                    value += source.slice(begin, Index);
                                }
                            }
                            if (source.charCodeAt(Index) == 34) {
                                // Advance to the next character and return the revived string.
                                Index++;
                                return value;
                            }
                            // Unterminated string.
                            abort();
                        default:
                            // Parse numbers and literals.
                            begin = Index;
                            // Advance past the negative sign, if one is specified.
                            if (charCode == 45) {
                                isSigned = true;
                                charCode = source.charCodeAt(++Index);
                            }
                            // Parse an integer or floating-point value.
                            if (charCode >= 48 && charCode <= 57) {
                                // Leading zeroes are interpreted as octal literals.
                                if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
                                    // Illegal octal literal.
                                    abort();
                                }
                                isSigned = false;
                                // Parse the integer component.
                                for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++) ;
                                // Floats cannot contain a leading decimal point; however, this
                                // case is already accounted for by the parser.
                                if (source.charCodeAt(Index) == 46) {
                                    position = ++Index;
                                    // Parse the decimal component.
                                    for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++) ;
                                    if (position == Index) {
                                        // Illegal trailing decimal.
                                        abort();
                                    }
                                    Index = position;
                                }
                                // Parse exponents. The `e` denoting the exponent is
                                // case-insensitive.
                                charCode = source.charCodeAt(Index);
                                if (charCode == 101 || charCode == 69) {
                                    charCode = source.charCodeAt(++Index);
                                    // Skip past the sign following the exponent, if one is
                                    // specified.
                                    if (charCode == 43 || charCode == 45) {
                                        Index++;
                                    }
                                    // Parse the exponential component.
                                    for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++) ;
                                    if (position == Index) {
                                        // Illegal empty exponent.
                                        abort();
                                    }
                                    Index = position;
                                }
                                // Coerce the parsed value to a JavaScript number.
                                return +source.slice(begin, Index);
                            }
                            // A negative sign may only precede numbers.
                            if (isSigned) {
                                abort();
                            }
                            // `true`, `false`, and `null` literals.
                            if (source.slice(Index, Index + 4) == "true") {
                                Index += 4;
                                return true;
                            } else if (source.slice(Index, Index + 5) == "false") {
                                Index += 5;
                                return false;
                            } else if (source.slice(Index, Index + 4) == "null") {
                                Index += 4;
                                return null;
                            }
                            // Unrecognized token.
                            abort();
                    }
                }
                // Return the sentinel `$` character if the parser has reached the end
                // of the source string.
                return "$";
            };

            // Internal: Parses a JSON `value` token.
            var get = function (value) {
                var results, hasMembers;
                if (value == "$") {
                    // Unexpected end of input.
                    abort();
                }
                if (typeof value == "string") {
                    if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
                        // Remove the sentinel `@` character.
                        return value.slice(1);
                    }
                    // Parse object and array literals.
                    if (value == "[") {
                        // Parses a JSON array, returning a new JavaScript array.
                        results = [];
                        for (; ; hasMembers || (hasMembers = true)) {
                            value = lex();
                            // A closing square bracket marks the end of the array literal.
                            if (value == "]") {
                                break;
                            }
                            // If the array literal contains elements, the current token
                            // should be a comma separating the previous element from the
                            // next.
                            if (hasMembers) {
                                if (value == ",") {
                                    value = lex();
                                    if (value == "]") {
                                        // Unexpected trailing `,` in array literal.
                                        abort();
                                    }
                                } else {
                                    // A `,` must separate each array element.
                                    abort();
                                }
                            }
                            // Elisions and leading commas are not permitted.
                            if (value == ",") {
                                abort();
                            }
                            results.push(get(value));
                        }
                        return results;
                    } else if (value == "{") {
                        // Parses a JSON object, returning a new JavaScript object.
                        results = {};
                        for (; ; hasMembers || (hasMembers = true)) {
                            value = lex();
                            // A closing curly brace marks the end of the object literal.
                            if (value == "}") {
                                break;
                            }
                            // If the object literal contains members, the current token
                            // should be a comma separator.
                            if (hasMembers) {
                                if (value == ",") {
                                    value = lex();
                                    if (value == "}") {
                                        // Unexpected trailing `,` in object literal.
                                        abort();
                                    }
                                } else {
                                    // A `,` must separate each object member.
                                    abort();
                                }
                            }
                            // Leading commas are not permitted, object property names must be
                            // double-quoted strings, and a `:` must separate each property
                            // name and value.
                            if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
                                abort();
                            }
                            results[value.slice(1)] = get(lex());
                        }
                        return results;
                    }
                    // Unexpected token encountered.
                    abort();
                }
                return value;
            };

            // Internal: Updates a traversed object member.
            var update = function (source, property, callback) {
                var element = walk(source, property, callback);
                if (element === undef) {
                    delete source[property];
                } else {
                    source[property] = element;
                }
            };

            // Internal: Recursively traverses a parsed JSON object, invoking the
            // `callback` function for each value. This is an implementation of the
            // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
            var walk = function (source, property, callback) {
                var value = source[property], length;
                if (typeof value == "object" && value) {
                    // `forEach` can't be used to traverse an array in Opera <= 8.54
                    // because its `Object#hasOwnProperty` implementation returns `false`
                    // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
                    if (getClass.call(value) == arrayClass) {
                        for (length = value.length; length--;) {
                            update(value, length, callback);
                        }
                    } else {
                        forEach(value, function (property) {
                            update(value, property, callback);
                        });
                    }
                }
                return callback.call(source, property, value);
            };

            // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
            JSON3.parse = function (source, callback) {
                var result, value;
                Index = 0;
                Source = "" + source;
                result = get(lex());
                // If a JSON string contains multiple tokens, it is invalid.
                if (lex() != "$") {
                    abort();
                }
                // Reset the parser state.
                Index = Source = null;
                return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
            };
        }
    }

    // Export for asynchronous module loaders.
    if (isLoader) {
        define(function () {
            return JSON3;
        });
    }
}(this));
